Valve-motion case.



E. P. HORTON. VALVE MOTION CASE.

APPLICATION FILED 11110. 24, 1913.

Patented June 9, 1914.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH C0,, WgSHINUTON, n. c,

E. P. HORTON. VALVE MOTION CASE.

APPLICATION IILED 13110 .24, 1913.

1,099,601. at nted June 9,1914,

2 SHEETS-SHEET 2.

EDMUND P. HORTON, OF ATLANTA, GEORGIA.

VALVE-MOTION CASE.

Specification of Letters Patent.

Patented J rule 9, 1914.

Application filed December 24, 1913. Serial No. 808,585.

To all whom it may concern Be it known that I, EDMUND P. Homes, a citizen of the United States, and resident of Atlanta, county of Fulton, State of Georgia, have invented certain new and useful Improvements in Valve-Mot on Cases, of which the following is a speclhcation.

This invention relates to the casing for supporting the cam shaft, push rods, time gears, etc, used in internal combustion en gines.

It has been my purpose to make a caslng of the kind indicated which will fit on the crank case of engines now in common use without the necessity for changes in the crank case and which will permit the easy removal of a section carrying the push rods so as to give easy access to the interior of the crank case without disturbing or disarranging the time gears and cam shaft. The construction makes it possible for an unskilled workman to get access to the crank case and to reassemble the parts aecurately in workin position without any adjustment of the tune gears or cam shaft, since those parts remain in their timed relation throughout the work. I am aware that others have sought to accomplish this result, as illustrated in the patent to Dahl, 1,020,081, March 12, 1912, but the construction which I have devised for the purpose is different from and has advantages over any of those which, so far as I am aware, have been made heretofore.

The novel features and advantages of my invention will be apparent from the following description taken in connection with the accompanying drawings.

In the drawings, Figure 1 is a plan view of the valve motion case embodying my invention and having the cam shaft, time gears, and push rods and cover removed. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 8 is a plan view of the removable section adapted to carry the push rods, and Fig. 1 is a section on the line 4t4 of Fig. 1.

In these drawings I have shown a crank case 1 which may be of a known type having an opening in its top over which fits the valve motion case.

My valve motion case as illustrated in Fig. 1 is substantially rectangular in outline having two opposite vertical walls 2, 3, which are integrally connected at their ends by walls 1 and 5. The walls +2 and 5, however, have gaps in their upper portion leaving strips 6 and 7 at the bottom, these strips being made in the form of horizontal flanges which fit down on the crank case and which I have shown extending inwardly from the margin of the case because that is the preferred form, but it is to be understood that my invention is not limited to the particular form of the connecting strips nor to the direction in which they extend from the margin. Bearings 8 and 9 are carried in line by the walls 2 and 3 and are for the purpose of receiving the cam shaft and shaft of the time gear.

The frame made up of the sides 2, 3, l and 5 may be fastened in place on the crank case in any suitable way, and for this purpose the form shown has within each corner at the bottom a web 10 through which a screw or bolt 11 or other fastening means may pass to secure the frame to the crank case. The fastening means, as shown, correspond in position to those now applied to the valve motion cases in use and therefore my case may be easily substituted for those in use. The corners of the frame may be made in the form of hollow posts opening into the interior of the frame with a web at the bottom, as shown, but that is not essential.

For the purpose of easy removal of the push rods I mount them in a detachable section of the valve motion case, preferably constructed in one piece, as shown in Fig. 3. This section includes removable wall sections 12, 13 corresponding in height to the height of walls and 5 above the strips 6 and 7 and fitting accurately within the gaps in those walls so as to complete them. These walls 12 and 13 carry the push rod bearings 14 and 15 and are preferably connected by an integral strut 1(3 The removable section has ears 17, 18, 19 and 20 [it ting down against the flanges 6 and 7, and in the form shown those cars are illustrated as inside of the valve motion case to correspond with the showing of flanges 6 and 7, but as indicated, in describing the flanges the invention is not limited to that location. Bolts, screws or other suitable fastening means 24: may be used for securing the ears to the flanges whereby the removable section will be securely. fastened in place in the valve motion case. The cars and flanges constitute an eiiicient and desirable fastening means, but in its broader aspects the invention is not limited to that means for securing the detachable section in place in the frame.

When using the form of frame having the hollow posts at the corners 1 preferably make the detachable section with arms 21, 22 extending from the opposite ends of the walls 12 and 13 to the corners, but those arms are,-of course, not necessary. When those arms are used their lower edges may be cut away over the bolts 11, as shown in Fig. 4, and they may each be provided with a screw threaded hole 23 or other means by which the cover of the valve motion case may be held in place. It is to be understood, however, that it is not essential that the cover be secured to the frame through the said arms since any suitable fastening means may be used.

It will be observed from the construction above described that the removable section carrying the bearings 1s and 15 can 'be removed by loosening the bolts 24: after the cover has been removed and the removable section can be lifted out. This removal does not disturb or affect the position of the time gears and cam shaft and the section may be placed back in position with the assurance on the part of an unskilled workman that the timing of the engine will remain just as it was before he removed the part.

Having thus described my invention, what I claim is:

1. The combination with a crank case having an opening therein, of a valve motion case secured thereto comprising an integral frame fitting around the margin of said opening and carrying on opposite sides alined bearings for the cam shaft and time gear, a removable section carrying alined oppositely disposed push rod bearings fitting in the sides of said frame at right angles to said cam shaft bearings, and means for securing said removable section in place in said frame.

2. The combination with a crank case having an opening therein, of a valve motion case secured thereto comprising an integral rectangular frame fitting around the margin of said opening and carrying bearings for the cam shaft and time gear, the vertical side wall parallel to said bearings being so formed as to have a gap in its upper edge and a connecting strip at the bottom, a removable section carrying push rod bearings fitting in and filling said gap, and means for removably securing said removable section in place in said gap.

3. The combination with a crank case having an opening therein, of a valve motion case secured thereto comprising an integral rectangular frame fitting around the margin of said opening and carrying on opposite sides alined cam shaft bearings, the vertical side walls parallel to said bearings being so formed as to have gaps in their upper edges and a connecting strip at the bottom means at the corners within the margin of said frame for securing said frame to the crank case, removable wall sections carrying alined oppositely disposed push rod bearings fitting in and filling said gaps, and means for securing said removable wall sections to said integral rectangular frame.

4:. The combination with a crank case having an opening therein, of a valve motion case secured thereto comprising an int gral rectangular frame fitting around the mar-- gin of said opening and carrying on opposite sides alined cam shaft hearings, the ver tical side walls parallel to said bearings be ing so formed as to have gaps in their upper edges and a connecting strip at the bottom, means at the corners within the margin of said frame for securing said frame to the crank case, removable wall sections carrying alined oppositely disposed push rod bearings fitting in and filling said gaps, means for securing said removable sections to said strips, and arms on said removable sections within said frame extending to the corners of said frame and provided with means for securing the cover of said valve motion case thereto.

5. A valve motion case substantially rectangular in outline having vertical marginal walls of uniform height integrally formed, two opposite walls having corresponding gaps in the upper part and connecting strips at the bottom, removable wall sections filling said gaps and carrying push rod bearings, and means for detachably securing said removable sections in place in the case.

6. The combination with a crank case having an opening therein, of a valve motion case secured thereto comprising an integral frame having walls surrounding said opening, a gap being left in the upper part of said wall at one point, a bearing in said Wall for a cam shaft, a removable wall section fitting in said gap completing said wall and carrying push rod bearings, and means for securing said removable wall section in place in said frame.

in testimony whereof I aflix my signature in presence of two witnesses.

EDMUND P. HORTON. lVitnesses E. A. NIoHoLs, L. W. HAZARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents, Washington, D. C. 

